63409369 has 3 divisors (see below), whose sum is σ = 63417333. Its totient is φ = 63401406.

The previous prime is 63409349. The next prime is 63409373. The reversal of 63409369 is 96390436.

The square root of 63409369 is 7963.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-63409369 is a prime.

It is a super-2 number, since 2×63409369² = 8041496153956322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63409349) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3982 + ... + 11944.

It is an arithmetic number, because the mean of its divisors is an integer number (21139111).

Almost surely, 2^63409369 is an apocalyptic number.

63409369 is the 7963-rd square number.

63409369 is the 3982-nd centered octagonal number.

It is an amenable number.

63409369 is a deficient number, since it is larger than the sum of its proper divisors (7964).

63409369 is an frugal number, since it uses more digits than its factorization.

63409369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15926 (or 7963 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 40.

The cubic root of 63409369 is about 398.7657140127.

Multiplying 63409369 by its product of nonzero digits (104976), we get a square (6656461920144 = 2580012²).

The spelling of 63409369 in words is "sixty-three million, four hundred nine thousand, three hundred sixty-nine".